71. Tracked Changes. Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. Performance requirements for apparatus used for general gas detection Part 3, (25th February 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗
72. Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. General requirements and test methods Part 1, (15th February 2000) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (28 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
73. Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. Performance requirements for apparatus used for measuring concentrations in the region of limit values Part 2, (15th February 2000) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
74. Workplace atmospheres. Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. Performance requirements for apparatus used for measuring concentrations well above limit values Part 3, (15th February 2000) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
75. Workplace atmospheres. Gas detectors. Selection, installation, use and maintenance of detectors for toxic gases and vapours Part 2, (5th August 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (68 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗